When a mixture of two black powders is heated, it gave off a gas which turned lime water milky

Give a chemical equation to show the reaction between gas and lime water

Red scales residue can be seen on the black residue. Name the red scales

The red scale residue partly dissolves in dilute acid to form a pale blue solution. Name the pale blue solution and give chemical equation to support your answer.

What are the names of the two powders?

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asked by saurav
  1. powders are carbon and cupric oxide

    red sclae - copper

    pale blue solution - CuSO4

    rest do by yourself

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    posted by clive
  2. Post answers please!!!

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